Home / 165,081.12-227,301.86-128,928.60

Finding the Fourth Proportional to 165,081.12, 227,301.86 and 128,928.60

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Solution

The fourth proportional to 165,081.12, 227,301.86 and 128,928.60 is: 177,523.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,081.12 : 227,301.86 = 128,928.60 : x
  2. Step 2: Convert to fraction form
    165,081.12/227,301.86 = 128,928.60/x
  3. Step 3: Cross multiply
    165,081.12x = 227,301.86 × 128,928.60
  4. Step 4: Simplify right side
    165,081.12x = 29,305,710,587.20
  5. Step 5: Solve for x
    x = 29,305,710,587.20/165,081.12
  6. Step 6: Final answer
    x = 177,523.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.